Homeβ€Ί Steering > Steering, Gear and Related Componentsβ€Ί BBB Industries N503-0103 Steering Gear
Part #: N503-0103

BBB Industries N503-0103 Steering Gear

New Steering Gear
111 vehicles fit this part
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OE Direct Replacement β€” Bolt-on fit, no modifications needed
New Steering Gear
Fitment: American Motors, Buick, Cadillac, Chevrolet, GMC, Jeep, Oldsmobile, and Pontiac, AMX, Concord, Century, Electra, Estate Wagon, LeSabre, Regal, Riviera, Skyhawk, Skylark, Commercial Chassis, DeVille, Eldorado, Fleetwood, Seville, Camaro, Caprice, El Camino, Impala, Malibu, Monte Carlo, Monza, Nova, Caballero, Cherokee, J10, Wagoneer, 98, Custom Cruiser, Cutlass, Cutlass Supreme, Delta 88, Omega, Starfire, Toronado, Bonneville, Catalina, Firebird, Grand Am, Grand Prix, LeMans, Phoenix, Sunbird, Gremlin, Matador, Grand Safari, Hornet, Vega, Sprint, Astre, and Ventura
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Overview of BBB Industries New Steering Gear N503-0103

The BBB Industries New Steering Gear N503-0103 is designed for precise steering control in select Buick, Cadillac, Chevrolet, Jeep, Oldsmobile, and Pontiac vehicles. This electric steering gear offers reliable performance and comes with an installation kit for ease of replacement.

  • Output shaft diameter: 1.25 inches (31.75 mm)
  • Input shaft diameter: 0.72 inches (18.29 mm)
  • Input shaft spline count: 26 splines
  • Output shaft spline count: 32 splines
  • Inlet size: 11/16x18 thread
  • Outlet size: 5/8x18 thread
  • Pressure port thread size: 11/16x18
  • Return port thread size: 5/8x18
  • Number of mounting holes: 3
  • Turns lock to lock: 3.375
  • Manual or power: Electric steering gear
  • Installation kit included
  • New, not remanufactured

About the New Steering Gear Product Line

The BBB Industries New Steering Gear product line focuses on delivering brand-new steering components engineered to meet or exceed OEM specifications. This line ensures consistent fitment and performance for a range of vehicles, including popular models from Buick, Cadillac, Chevrolet, Jeep, Oldsmobile, and Pontiac. The N503-0103 part is part of this line, providing a direct replacement option with updated manufacturing standards.

Detailed Product Description

The N503-0103 steering gear is an electric type designed to replace worn or damaged steering gears in various GM and Jeep models such as the Chevrolet Camaro, Buick LeSabre, Pontiac Grand Prix, and Jeep Cherokee. It features a 1.25-inch output shaft diameter and a 0.72-inch input shaft diameter, with spline counts of 32 and 26 respectively, ensuring precise engagement and smooth steering response. The unit includes three mounting holes for secure installation and has inlet and outlet ports sized 11/16x18 and 5/8x18 threads, compatible with standard hydraulic lines. The steering gear offers 3.375 turns lock to lock, providing responsive steering feel consistent with factory specifications.

Common Applications and Issues Addressed

  • Eliminates excessive steering play or looseness
  • Resolves steering wheel vibration or noise
  • Corrects difficulty in steering or heavy steering effort
  • Fixes fluid leaks from worn seals or ports
  • Restores proper steering alignment and control

Installation Notes and Tips

This steering gear comes with an installation kit to facilitate replacement. When installing the N503-0103, ensure all hydraulic connections match the specified inlet and outlet thread sizes (11/16x18 and 5/8x18). Verify spline counts and shaft diameters for compatibility with your vehicle’s steering column and linkage. Proper torque on mounting bolts and alignment of the steering gear are critical for safe operation. Bleed the power steering system thoroughly after installation to remove air and ensure smooth steering performance.

Quality Assurance and Warranty

BBB Industries provides this New Steering Gear as a brand-new component manufactured to meet OEM standards. The part number N503-0103 undergoes quality inspections to ensure durability and fitment accuracy. Installation kit inclusion supports proper setup. Warranty coverage details should be confirmed with the distributor or retailer, as BBB Industries typically offers limited warranties on new steering components.

BrandBBB Industries
Part NumberN503-0103
PositionNew Steering Gear
Inlet Size11/16X18
Input Shaft Diameter0.72
Input Shaft Diameter18.29
Input Shaft Spline Count26
Installation Kit IncludedYes
Manual or PowerElectric
New or RemanufacturedNew
Number of Mounting Holes3
Outlet Size5/8X18
Output Shaft Diameter1.25
Output Shaft Diameter31.75
Output Shaft Spline Count32
Pressure Port Thread Size11/16X18
Return Port Thread Size5/8X18
Turns Lock To Lock3.375

This part fits 111 vehicles. Search below:

YearMakeModelPositionNotes
1979BuickCenturyN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979BuickLeSabreN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979BuickRegalN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979BuickRivieraN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979BuickSkyhawkN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979BuickSkylarkN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979CadillacCommercial ChassisN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979CadillacDeVilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979CadillacEldoradoN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979CadillacFleetwoodN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979CadillacSevilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979ChevroletCamaroN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1979ChevroletCapriceN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979ChevroletEl CaminoN/APower Steering; w/ Square (4 Bolt) Housing Cover w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1979ChevroletImpalaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979ChevroletMalibuN/APower Steering; w/ Square (4 Bolt) Housing Cover w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1979ChevroletMonte CarloN/APower Steering; w/ Square (4 Bolt) Housing Cover w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1979ChevroletMonzaN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979ChevroletNovaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979JeepCherokeeN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979JeepJ10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979JeepWagoneerN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979Oldsmobile98N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979OldsmobileCustom CruiserN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979OldsmobileCutlassN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979OldsmobileCutlass SupremeN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979OldsmobileDelta 88N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979OldsmobileOmegaN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979OldsmobileStarfireN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979OldsmobileToronadoN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979PontiacBonnevilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979PontiacCatalinaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979PontiacFirebirdN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1979PontiacGrand AmN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979PontiacGrand PrixN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979PontiacLeMansN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1979PontiacPhoenixN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1979PontiacSunbirdN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978BuickCenturyN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978BuickLeSabreN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978BuickRegalN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978BuickRivieraN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978BuickSkyhawkN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978BuickSkylarkN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978CadillacCommercial ChassisN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978CadillacDeVilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978CadillacEldoradoN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978CadillacFleetwoodN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978CadillacSevilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978ChevroletCamaroN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1978ChevroletCapriceN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978ChevroletEl CaminoN/APower Steering; w/ Square (4 Bolt) Housing Cover w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1978ChevroletImpalaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978ChevroletMalibuN/APower Steering; w/ Square (4 Bolt) Housing Cover w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1978ChevroletMonte CarloN/APower Steering; w/ Square (4 Bolt) Housing Cover w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1978ChevroletMonzaN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978ChevroletNovaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978JeepCherokeeN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978JeepJ10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978JeepWagoneerN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978Oldsmobile98N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978OldsmobileCustom CruiserN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978OldsmobileCutlassN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978OldsmobileCutlass SupremeN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978OldsmobileDelta 88N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978OldsmobileOmegaN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978OldsmobileStarfireN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978PontiacBonnevilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978PontiacCatalinaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978PontiacFirebirdN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1978PontiacGrand AmN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978PontiacGrand PrixN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978PontiacLeMansN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1978PontiacPhoenixN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1978PontiacSunbirdN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1977BuickCenturyN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977BuickLeSabreN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977BuickRegalN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977BuickRivieraN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977BuickSkyhawkN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1977BuickSkylarkN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977CadillacCommercial ChassisN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977CadillacDeVilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977CadillacEldoradoN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977CadillacFleetwoodN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977CadillacSevilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977ChevroletCamaroN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1977ChevroletCapriceN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977ChevroletEl CaminoN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1977ChevroletImpalaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977ChevroletMalibuN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1977ChevroletMonte CarloN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1977ChevroletMonzaN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1977ChevroletNovaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977JeepCherokeeN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977JeepJ10N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977JeepWagoneerN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977Oldsmobile98N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977OldsmobileCustom CruiserN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977OldsmobileCutlassN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977OldsmobileCutlass SupremeN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977OldsmobileDelta 88N/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977OldsmobileOmegaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977OldsmobileStarfireN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear
1977PontiacBonnevilleN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977PontiacCatalinaN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977PontiacFirebirdN/APower Steering; w/ 3 - 4 Turns Lock to Lock; New Steering Gear
1977PontiacGrand PrixN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977PontiacLeMansN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977PontiacPhoenixN/ACompatible with vehicles equipped with power steering.; New Steering Gear
1977PontiacSunbirdN/APower Steering with Square (4 Bolt) Housing Cover; New Steering Gear

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.